Remove deprecated code paths

src/index.ts

@@ -68,8 +68,6 @@ const pathValueRegExp = /^[\u0020-\u003A\u003D-\u007E]*$/;
  */
 const maxAgeRegExp = /^-?\d+$/;
 
-const __toString = Object.prototype.toString;
-
 const NullObject = /* @__PURE__ */ (() => {
   const C = function () {};
   C.prototype = Object.create(null);
@@ -276,28 +274,13 @@ export type SerializeOptions = StringifyOptions &
  * Serialize a name value pair into a cookie string suitable for
  * http headers. An optional options object specifies cookie parameters.
  *
- * serialize('foo', 'bar', { httpOnly: true })
- *   => "foo=bar; httpOnly"
+ * stringifySetCookie({ name: 'foo', value: 'bar', httpOnly: true })
+ *   => "foo=bar; HttpOnly"
  */
 export function stringifySetCookie(
   cookie: SetCookie,
   options?: StringifyOptions,
-): string;
-export function stringifySetCookie(
-  name: string,
-  val: string,
-  options?: SerializeOptions,
-): string;
-export function stringifySetCookie(
-  _name: string | SetCookie,
-  _val?: string | StringifyOptions,
-  _opts?: SerializeOptions,
 ): string {
-  const cookie =
-    typeof _name === "object"
-      ? _name
-      : { ..._opts, name: _name, value: String(_val) };
-  const options = typeof _val === "object" ? _val : _opts;
   const enc = options?.encode || encodeURIComponent;
 
   if (!cookieNameRegExp.test(cookie.name)) {
@@ -337,7 +320,7 @@ export function stringifySetCookie(
   }
 
   if (cookie.expires) {
-    if (!isDate(cookie.expires) || !Number.isFinite(cookie.expires.valueOf())) {
+    if (!Number.isFinite(cookie.expires.valueOf())) {
       throw new TypeError(`option expires is invalid: ${cookie.expires}`);
     }
 
@@ -403,7 +386,7 @@ export function stringifySetCookie(
 /**
  * Deserialize a `Set-Cookie` header into an object.
  *
- * deserialize('foo=bar; httpOnly')
+ * parseSetCookie('foo=bar; HttpOnly')
  *   => { name: 'foo', value: 'bar', httpOnly: true }
  */
 export function parseSetCookie(str: string, options?: ParseOptions): SetCookie {
@@ -533,15 +516,3 @@ function decode(str: string): string {
     return str;
   }
 }
-
-/**
- * Determine if value is a Date.
- */
-function isDate(val: any): val is Date {
-  return __toString.call(val) === "[object Date]";
-}
-
-/**
- * Backward compatibility exports.
- */
-export { stringifySetCookie as serialize, parseCookie as parse };

src/parse-cookie.spec.ts

@@ -11,10 +11,6 @@ describe("cookie.parseCookie", function () {
     });
   });
 
-  it("should have backward compatible export", function () {
-    expect(cookie.parse).toBe(cookie.parseCookie);
-  });
-
   it("should parse cookie string to object", function () {
     expect(cookie.parseCookie("foo=bar")).toEqual({ foo: "bar" });
     expect(cookie.parseCookie("foo=123")).toEqual({ foo: "123" });

src/stringify-set-cookie.bench.ts

@@ -3,16 +3,24 @@ import * as cookie from "./index.js";
 
 describe("cookie.stringifySetCookie", () => {
   bench("simple", () => {
-    cookie.stringifySetCookie("foo", "bar");
+    cookie.stringifySetCookie({
+      name: "foo",
+      value: "bar",
+    });
   });
 
   bench("encode", () => {
-    cookie.stringifySetCookie("foo", "hello there!");
+    cookie.stringifySetCookie({
+      name: "foo",
+      value: "hello there!",
+    });
   });
 
   const expires = new Date("Wed, 21 Oct 2015 07:28:00 GMT");
-  bench("attributes", () => {
-    cookie.stringifySetCookie("foo", "bar", {
+  bench("all attributes", () => {
+    cookie.stringifySetCookie({
+      name: "foo",
+      value: "bar",
       path: "/",
       domain: "example.com",
       maxAge: 3600,
@@ -25,7 +33,7 @@ describe("cookie.stringifySetCookie", () => {
     });
   });
 
-  bench("object input", () => {
+  bench("typical object", () => {
     cookie.stringifySetCookie({
       name: "foo",
       value: "bar",
@@ -36,36 +44,4 @@ describe("cookie.stringifySetCookie", () => {
       sameSite: "strict",
     });
   });
-
-  const setCookies10 = genSetCookies(10);
-  bench("10 set-cookies", () => {
-    for (const setCookie of setCookies10) {
-      cookie.stringifySetCookie(setCookie);
-    }
-  });
-
-  const setCookies100 = genSetCookies(100);
-  bench("100 set-cookies", () => {
-    for (const setCookie of setCookies100) {
-      cookie.stringifySetCookie(setCookie);
-    }
-  });
 });
-
-function genSetCookies(num: number): cookie.SetCookie[] {
-  const cookies: cookie.SetCookie[] = [];
-
-  for (let i = 0; i < num; i++) {
-    cookies.push({
-      name: "foo" + i,
-      value: "bar " + i,
-      path: "/foo" + i,
-      maxAge: 3600,
-      httpOnly: true,
-      secure: true,
-      sameSite: "lax",
-    });
-  }
-
-  return cookies;
-}